var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var session = require('express-session');
//加载ueditor 模块
var ueditor = require("ueditor");
//图片验证码
var svgCaptcha = require('svg-captcha');

var app = express();
var mongoose = require('./config/mongoose.js');
var db = mongoose();
var formidable = require("formidable");
fs = require("fs");

var url = require('url');

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.engine('.html', require('ejs').__express);
app.set('view engine', 'html');

app.use(logger('dev'));
app.use(bodyParser.json({limit: '50mb'}));
app.use(bodyParser.urlencoded({
  limit: '50mb',extended: true
}));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

//这里周期只设置为20秒，为了方便测试
//secret在正式用的时候务必修改
//express中间件顺序要和下面一致

app.use(session({ //session持久化配置
  secret: "jxchexie",
  key: "jxchexie",
  cookie: {
    maxAge: 1000 * 60 * 60 * 24 * 30
  }, //超时时间
  saveUninitialized: true,
  resave: false,
}));
app.use(function(req, res, next) {
  global.contextPath = req.protocol + '://' + req.get('host');
  next();
});

//ueditor上传图片
app.use("/ueditor/ue", ueditor(path.join(__dirname, 'public'), function(req, res, next) {
  // ueditor 客户发起上传图片请求
  if(req.query.action === 'uploadimage') {
    var foo = req.ueditor;
    var imgname = req.ueditor.filename;
    var img_url = '/images/ueditor/';
    res.ue_up(img_url); //你只要输入要保存的地址 。保存操作交给ueditor来做
    res.setHeader('Content-Type', 'text/html'); //IE8下载需要设置返回头尾text/html 不然json返回文件会被直接下载打开
  }
  //  客户端发起图片列表请求
  else if(req.query.action === 'listimage') {
    var dir_url = '/images/ueditor/';
    res.ue_list(dir_url); // 客户端会列出 dir_url 目录下的所有图片
  }
  // 客户端发起其它请求
  else {
    // console.log('config.json')
    res.setHeader('Content-Type', 'application/json');
    res.redirect('/ueditor/jsp/config.json');
  }
}));

//ueditor上传图片

app.get('/captcha', function(req, res) {
  var captcha = svgCaptcha.create({
    size: 4, // 验证码长度
    ignoreChars: '0o1ABCDEFGHIJKLMNOPQRSTPUVWXYZ', // 0o1ABCDEFGHIJKLMNOPQRSPUVWXYZ
    noise: 1, // 干扰线条的数量
    color: true, // 验证码的字符是否有颜色，默认没有，如果设定了背景，则默认有
    background: '#c4c4c5' // background color of the svg image
  });
  //将生成的验证码放在session中
  req.session.captcha = captcha.text;
  console.log(req.session.captcha);
  res.set('Content-Type', 'image/svg+xml');
  res.status(200).send(captcha.data);
});
var mongoose1 = require('mongoose');
var Carousel = mongoose1.model('Carousel');
var Video = mongoose1.model('Video');
//上传首页轮播图
app.post('/upload', function(req, res) {
  var form = new formidable.IncomingForm();
  console.log("about to parse");
  form.parse(req, function(error, fields, files) {
    console.log(fields)
    console.log("parsing done");
    var timestamp = Date.parse(new Date()).toString();
    if(!fs.existsSync("public/web/images/upload/carousel/")) {
      fs.mkdir("public/web/images/upload/carousel/");
    }
    fs.writeFileSync("public/web/images/upload/carousel/" + timestamp + ".png", fs.readFileSync(files.upload.path));
    var url = "web/images/upload/carousel/" + timestamp + ".png"
    var data = new Carousel({
      url: url,
      sort:fields.sort
      //fields.sort
    });
    data.save(function(err) {
      if(err) {
        res.json("上传错误,请刷新网页重新上传")
      } else {
       res.json(url)
      }
    });
  });

});
app.post('/uploadPic', function(req, res) {
  var form = new formidable.IncomingForm();
  form.keepExtensions = true;
  console.log("about to parse");
  form.parse(req, function(error, fields, files) {
    console.log("parsing done");
    var timestamp = Date.parse(new Date()).toString();
    console.log(1)
    var Extensions = files.upload.path.split(".")
    console.log(2)
    
    Extensions = "."+Extensions[1]
    console.log(3)
    
//  if(!fs.existsSync("public/web/images/upload/indexPic/")) {
//    fs.mkdirSync("public/web/images/upload/indexPic/");
//  }
    fs.writeFileSync("public/web/images/upload/indexPic/" + timestamp + Extensions, fs.readFileSync(files.upload.path));
    console.log(4)
    
    var url = "/web/images/upload/indexPic/" + timestamp + Extensions
    data.save(function(err) {
      if(err) {
        res.json("上传失败")
      } else {
       res.json(url)
      }
    });
  });

});
//上传首页视频
app.post('/upload1', function(req, res) {
  //form表单
  var form = new formidable.IncomingForm();
  //保留后缀
  form.keepExtensions = true;
  //上传的数据保存的路径
  form.parse(req, function(error, fields, files) {
    if(!fs.existsSync("public/web/video/")) {
      fs.mkdir("public/web/video/",function(){});
    }
    var timestamp = Date.parse(new Date()).toString();
    var Extensions = files.upload.path.split(".")
    Extensions = Extensions[1];
    fs.writeFileSync("public/web/video/" + timestamp + "." + Extensions, fs.readFileSync(files.upload.path));
    var url = "web/video/" + timestamp + "."+ Extensions;
    var data = new Video({
      url: url
    });
    data.save(function(err) {
      if(err) {
        res.json("上传错误,请刷新网页重新上传")
      } else {
        res.json("上传成功,请刷新网页")
      }
    });
  });

});
//读取首页轮播图

app.post('/readCarousel', function(req, res) {

});
require('./routes/index')(app);

/*官网后台做操作是需要，登录验证*/
app.use(function(req, res, next) {
  if(!req.session.user) {
    if(req.url == "/login" || req.url == "/register") {
      next(); //如果请求的地址是登录则通过，进行下一个请求
    } else {
      res.redirect('/login');
    }
  } else if(req.session.user) {
    next();
  }
});
/*后台登录验证*/

require('./routes/admin')(app);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  var err = new Error('Not Found');
  err.status = 404;
  next(err);
});

// error handlers
// development error handler
// will print stacktrace
if(app.get('env') === 'development') {
  app.use(function(err, req, res, next) {
    res.status(err.status || 500);
    res.render('website/index/error', {
      message: err.message,
      error: err
    });
  });
}

// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
  res.status(err.status || 500);
  res.render('website/index/error', {
    message: err.message,
    error: {}
  });
});
module.exports = app;